diff options
Diffstat (limited to 'lib/json/pure/parser.rb')
| -rw-r--r-- | lib/json/pure/parser.rb | 144 |
1 files changed, 89 insertions, 55 deletions
diff --git a/lib/json/pure/parser.rb b/lib/json/pure/parser.rb index d612018..e24aac1 100644 --- a/lib/json/pure/parser.rb +++ b/lib/json/pure/parser.rb @@ -68,42 +68,12 @@ module JSON # defaults to true. # * *object_class*: Defaults to Hash # * *array_class*: Defaults to Array + # * *quirks_mode*: Enables quirks_mode for parser, that is for example + # parsing single JSON values instead of documents is possible. def initialize(source, opts = {}) opts ||= {} - if defined?(::Encoding) - if source.encoding == ::Encoding::ASCII_8BIT - b = source[0, 4].bytes.to_a - source = case - when b.size >= 4 && b[0] == 0 && b[1] == 0 && b[2] == 0 - source.dup.force_encoding(::Encoding::UTF_32BE).encode!(::Encoding::UTF_8) - when b.size >= 4 && b[0] == 0 && b[2] == 0 - source.dup.force_encoding(::Encoding::UTF_16BE).encode!(::Encoding::UTF_8) - when b.size >= 4 && b[1] == 0 && b[2] == 0 && b[3] == 0 - source.dup.force_encoding(::Encoding::UTF_32LE).encode!(::Encoding::UTF_8) - - when b.size >= 4 && b[1] == 0 && b[3] == 0 - source.dup.force_encoding(::Encoding::UTF_16LE).encode!(::Encoding::UTF_8) - else - source.dup - end - else - source = source.encode(::Encoding::UTF_8) - end - source.force_encoding(::Encoding::ASCII_8BIT) - else - b = source - source = case - when b.size >= 4 && b[0] == 0 && b[1] == 0 && b[2] == 0 - JSON.iconv('utf-8', 'utf-32be', b) - when b.size >= 4 && b[0] == 0 && b[2] == 0 - JSON.iconv('utf-8', 'utf-16be', b) - when b.size >= 4 && b[1] == 0 && b[2] == 0 && b[3] == 0 - JSON.iconv('utf-8', 'utf-32le', b) - when b.size >= 4 && b[1] == 0 && b[3] == 0 - JSON.iconv('utf-8', 'utf-16le', b) - else - b - end + unless @quirks_mode = opts[:quirks_mode] + source = determine_encoding source end super source if !opts.key?(:max_nesting) # defaults to 19 @@ -113,44 +83,108 @@ module JSON else @max_nesting = 0 end - @allow_nan = !!opts[:allow_nan] - @symbolize_names = !!opts[:symbolize_names] - @create_additions = opts.key?(:create_additions) ? !!opts[:create_additions] : true - @create_id = opts[:create_id] || JSON.create_id - @object_class = opts[:object_class] || Hash - @array_class = opts[:array_class] || Array - @match_string = opts[:match_string] + @allow_nan = !!opts[:allow_nan] + @symbolize_names = !!opts[:symbolize_names] + if opts.key?(:create_additions) + @create_additions = !!opts[:create_additions] + else + @create_additions = true + end + @create_id = @create_additions ? JSON.create_id : nil + @object_class = opts[:object_class] || Hash + @array_class = opts[:array_class] || Array + @match_string = opts[:match_string] end alias source string + def quirks_mode? + !!@quirks_mode + end + + def reset + super + @current_nesting = 0 + end + # Parses the current JSON string _source_ and returns the complete data # structure as a result. def parse reset obj = nil - until eos? - case - when scan(OBJECT_OPEN) - obj and raise ParserError, "source '#{peek(20)}' not in JSON!" - @current_nesting = 1 - obj = parse_object - when scan(ARRAY_OPEN) - obj and raise ParserError, "source '#{peek(20)}' not in JSON!" - @current_nesting = 1 - obj = parse_array - when skip(IGNORE) - ; + if @quirks_mode + while !eos? && skip(IGNORE) + end + if eos? + raise ParserError, "source did not contain any JSON!" else - raise ParserError, "source '#{peek(20)}' not in JSON!" + obj = parse_value + obj == UNPARSED and raise ParserError, "source did not contain any JSON!" end + else + until eos? + case + when scan(OBJECT_OPEN) + obj and raise ParserError, "source '#{peek(20)}' not in JSON!" + @current_nesting = 1 + obj = parse_object + when scan(ARRAY_OPEN) + obj and raise ParserError, "source '#{peek(20)}' not in JSON!" + @current_nesting = 1 + obj = parse_array + when skip(IGNORE) + ; + else + raise ParserError, "source '#{peek(20)}' not in JSON!" + end + end + obj or raise ParserError, "source did not contain any JSON!" end - obj or raise ParserError, "source did not contain any JSON!" obj end private + def determine_encoding(source) + if defined?(::Encoding) + if source.encoding == ::Encoding::ASCII_8BIT + b = source[0, 4].bytes.to_a + source = + case + when b.size >= 4 && b[0] == 0 && b[1] == 0 && b[2] == 0 + source.dup.force_encoding(::Encoding::UTF_32BE).encode!(::Encoding::UTF_8) + when b.size >= 4 && b[0] == 0 && b[2] == 0 + source.dup.force_encoding(::Encoding::UTF_16BE).encode!(::Encoding::UTF_8) + when b.size >= 4 && b[1] == 0 && b[2] == 0 && b[3] == 0 + source.dup.force_encoding(::Encoding::UTF_32LE).encode!(::Encoding::UTF_8) + when b.size >= 4 && b[1] == 0 && b[3] == 0 + source.dup.force_encoding(::Encoding::UTF_16LE).encode!(::Encoding::UTF_8) + else + source.dup + end + else + source = source.encode(::Encoding::UTF_8) + end + source.force_encoding(::Encoding::ASCII_8BIT) + else + b = source + source = + case + when b.size >= 4 && b[0] == 0 && b[1] == 0 && b[2] == 0 + JSON.iconv('utf-8', 'utf-32be', b) + when b.size >= 4 && b[0] == 0 && b[2] == 0 + JSON.iconv('utf-8', 'utf-16be', b) + when b.size >= 4 && b[1] == 0 && b[2] == 0 && b[3] == 0 + JSON.iconv('utf-8', 'utf-32le', b) + when b.size >= 4 && b[1] == 0 && b[3] == 0 + JSON.iconv('utf-8', 'utf-16le', b) + else + b + end + end + source + end + # Unescape characters in strings. UNESCAPE_MAP = Hash.new { |h, k| h[k] = k.chr } UNESCAPE_MAP.update({ |